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Using WAN IP's in the LAN

AlienX

 Hi all,

I'm trying to rack my brain around how a setup will work that I currently have.

I have a UTM which has statically routed IPv4 Addresses pointed to it, these are:

  • 46.37.166.52 > 109.108.144.36
  • 46.37.166.53 > 109.108.144.36
  • 46.37.166.54 > 109.108.144.36
  • 46.37.166.55 > 109.108.144.36

I am unsure as to how these have been routed, i can only assume they are /32 routes.

I wish to use these IPv4 Addresses in the LAN, these IP's are routed to the WAN's IP of the UTM (109.108.144.36).

 

However, I am getting myself really confused - how do I go about allowing these public facing IP Addresses to be used in the LAN on a certain VLAN, i assumed that a static interface route would do the trick, but it does not seem to work - also, what gateway would I use, the UTM's WAN IP - but that's a different subnet?

 

Any help would be great.



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    Add a new Interface of type VLAN to the NIC used for your Internal Interface, assigning the .52 public IP as its address and a /30 subnet.  Since the .55 IP will then be the broadcast address, you can use .53 and .54 in your VLAN.  WebAdmin automatically creates routes between subnets defined on its interfaces, but you will need to make firewall rules allowing the traffic you want.

    With only four additional IPs, you might instead want to put them on the WAN interface as Additional Addresses /32 and then use DNATs and/or Webserver Protection to move the traffic to a DMZ with private IPs.

    Cheers - Bob

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  • 0

    Add a new Interface of type VLAN to the NIC used for your Internal Interface, assigning the .52 public IP as its address and a /30 subnet.  Since the .55 IP will then be the broadcast address, you can use .53 and .54 in your VLAN.  WebAdmin automatically creates routes between subnets defined on its interfaces, but you will need to make firewall rules allowing the traffic you want.

    With only four additional IPs, you might instead want to put them on the WAN interface as Additional Addresses /32 and then use DNATs and/or Webserver Protection to move the traffic to a DMZ with private IPs.

    Cheers - Bob

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